I know that in publishing order, you want Ultimate FF, then MZ1, then UFF 30-32, then BP, then MZ v AoD. I think Dead Days came after UFF 30-32, but not sure. Story-wise, I would read UFF, then Dead Days, then MZ1, then Black Panther and then move on to MZ2 and MZ3. UFF 30-32 doesn't have much to do with the verse itself, just the final fates of the Zombie FF. I haven't read MZ v. AoD, so I can't help you much there where to read it. I would probably do it at the end of your current list like you have it.

The way you have it is fine as well, but I think I would start with UFF since that was the intro to the universe and the other books (even the prequel) might reference that.

I couldn't get into this series after they turned The Punisher into a joke character. I was hopping for a redo of Garth Ennis's classic What If story, "Punisher Kills The Entire Marvel Universe". That story makes Marvel Zombies wet the bed at night. Ash is cool and everything, but he's no Frank.